Lubricator



R. W. DREW. Lubrioatolj.

(No Model.)

' Patented May 31,1881.

fm1/Waibli- UNITED .STA-STES PATENT OEEICE.

REUBEN W. DREW, OF CLEVELAND, OHIO.

LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 242,118, dated May 31,1881.

Application filed Apm'l 15, 1881. (No model.)

To all whom it may concern:

Be it known that I, REUBEN W. DREW, of Cleveland, in the county ofCuyahoga and State of Ohio, haveinvented certain new'and usefulImprovements in Lubricators and I do hereby declare that the followingis a full, clear, and exact description of the invention, which willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, which fornia part of this specification.

Figure l is a vertical sectional View of alubricator to which myinvention has been applied, and Fig. 2 is a view of the feed-rodconstituting my invention detached.

Similar letters of reference indicate corresponding parts in both gurcs.

This invention relates to lubricators or oilfeeders for various kinds ofmachinery 5 and it consists in the improved construction of thevertically-adjustable feed-rod, by which the quantity of oil to be fedmay be regulated, and. which is so constructed as to form anair-chamber, by which the pressure is regulated, so as to feed thelubricant evenly and regularly, as will be hereinafter more fullydescribed, and particularly pointed out in the claims.

In the drawings hereto annexed, A represents the oil cup or vessel,which is adjusted between two flanged caps or plates, the lower 4one ofwhich, B,is provided with a downwardprojecting nipple, C, for adjustingthe device in its proper position. A nipple, D, projecting upward fromplate B, is provided with a male thread, E, and a female thread, F, upontheformer of which a tube, G, projecting downward from the upper angedplate, H, is screwed, as shown, thus clamping and securing the body ofthe oil-cup in position.

Washers I may be interposed between the body of the oil-cup and theflanged plates, as shown, to insure a tight t.

The upper plate, H, is provided with a central vertical opening for thefeed-rod Y, J, which passes downV through tube Gr, the plate or cover Hbeing preferably provided with a suitablyconstructed'packing-box, K,around said rod, to prevent leakage.

The feed-rod,7 as I term it, consists of a tube threaded at the lowerend, so as to enter the female thread F in nipple D, and closed at itsupper end, where it is preferably' provided with a milled handle orthumb-piece, L. In the lower threaded end of the feed rod or tube isformed a triangular or A-shaped notch or opening, M, as clearly shown inFig. 2 of the drawings, through which the oil may escape through thenipple or opening in bottom plate, B, to the shaft-,ing which is to belubricated.

The tubular stem Gris provided with suitably-located openings O, throughwhich the -oil is admitted from the bulb or cup to the feedopening 5 andsuitable provision is or may be made for feeding the lubricatingmaterial to the bulb or vessel.

The operation and advantages of my invention will be readily understood,from the foregoing description, taken in connection with the drawingshereto annexed.

It is evident that the feed rod or tube may be raised or lowered by thethumb-piece or handle, so as to adjust the size of the feed-opening, andconsequently regulating the qu ntity of lubricant fed.

lt will also be seen that the tube J, being closed at its upper end,forms an air-chamber, in which the lubricant will rise only to a certainpoint, (indicated in the drawings,) above which the atmospheric air iscompressed, so as to form an air-cushion, by which an even and regularfeed of the lubricant is always insured.

I would have it distinctly understood that the form of feed rod or tubeherein described may be modified in construction and applied tolubricators constructed differently from the one herein described. Thus,in certain forms of lubricators where the cup or bulb is provided with aclosed top cap or plate, the upper end of the tube may be compressed soas to close it, and at the same time form a seat for a wrench ornippers, by which it may be vertically adjusted when the cover isremoved.

Other modiiications of details may also be made without chan ing thenature of my invention, which consists ofa hollow feed rod or tubeclosed at the upper end and provided at the lower end with a triangularor A-shaped notch or opening.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United Statesl. In a lubricator, the combinationof the IOO cup or chamber A, anged plate B, having threaded nipple D,flanged plate H, having threaded tube G, and the vertically-adjustabletubular feed-rod J,e1osed at its upper end and provided near its lowerend with a A-shuped notch, M, as described, for the purpose Set forth.

2. In zt lubrieutor, the herein-described vertically-adjustable tubularfeed-rod J, provided at its upper end with u thumb-piece, Inwhieh 1ocloses the said upper end, and having nearits lower end a A-shapednotch, M, as und for the purpose set forth.

In testimony that l claim the foregoing as my own I have hereto ufxed mysignature in presence of two witnesses.

REUBEN W. DREW.

Witnesses:

J. R. LITTELL, C. K. ALLEN.

